OnTime Clock vs Grumpy Sharky
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnTime Clock
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OnTime Clock — Always rings. Never late. 【6 Alarm Types】 • Standard Alarm: Daily reminders at fixed times • Fixed Alarm: One-time reminder for a specific date • Quick Alarm: Countdown timer, rings in minutes • Habit Alarm: Multiple reminders for one task, build good habits • Location Alarm: Auto check-in at work, reminders when leaving home • Hourly Chime: Automatic time announcement every hour 【Habit Building】 • Medication, water, exercise — never miss multiple daily reminders • 30+ habit templates, add with one tap • 20+ motivational quotes displayed randomly 【Smart Features】 • Auto-skip holidays, rings only on workdays • Regional holiday database for Greater China • Home screen widget shows your next alarm at a glance • Dynamic Island displays countdown in real time 【Native iOS 26 Experience】 • Built on AlarmKit — rings even on silent or locked screen • Liquid Glass design — smooth and beautifully native 【Privacy First】 • All data stored locally on your device • No network, no tracking, no ads, no in-app purchases • Free forever
Grumpy Sharky
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Doze off on the ride? A very grumpy little shark wakes you before your stop. Get off on time and it grows and judges you. It also keeps your to-dos, calendar and shift roster, and briefs you every morning. Nurse, retail or factory shift worker? Fill in your shifts and your alarms follow them. Grumpy Sharky: an arrival alarm, a pet to raise, to-dos, a calendar and a shift roster in one. Gets you off at the right stop - GPS only, no route lookup: buses, subways, trains, coaches and ferries, in the countryside or abroad - Vibration and sound as you enter your destination's range, earlier when you're moving fast - Battery friendly: light tracking far away, high accuracy up close, works with the screen off - Tunnel protection: no GPS? It estimates from your last speed and would rather wake you early - Your destination gets a little red flag. Ride the same way long enough and little sea creatures show up along it. Tap one: it remembers how often you've passed Take care of Sharky - Dismiss alarms on time, get off at your stop, finish your to-dos, and Sharky grows, levels up and changes its mood - It poops, gets sick, sleeps at night and talks in its sleep - Six moods and 10,000+ lines, written fresh in five languages, not translated - 77 accessories: one per level, free in the app only, never sold, odds published - Pink Shark: a new look at Lv10. Sharp tongue, soft heart, would never admit it - Play with a friend: scan each other's QR codes and your sharks sit face to face and really chat. Your friend sees your shark's current look To-dos and calendar - Dates, reminder times and repeats (daily, weekly, monthly, yearly, or only on workdays or days off) - Location reminders when you arrive at or leave a place: documents at work, milk when you leave the store - Remind me when I ride: no date needed. Start a ride and Sharky tells you what to do on the way - Countdowns for exams, trips and bills, with Sharky teasing you 7, 3 and 1 day before - Sticky-note colors for what's urgent, plus notes, phone and address on any to-do - A month view with a green dot on days you finished everything. Overdue to-dos get stuck on Sharky - Tap Done or Remind me in 10 min right from the notification - Back up your to-dos to a file for your next phone. No account needed Shift roster, made for shift work - Three ways to work: a regular week (public holidays off), a fixed rotation (like 2-on-2-off) or a monthly roster from your manager - Fill it like coloring: pick a shift and drag across the days, or fill one day after another - Doubles: a day shift straight into nights shows as two colors in one box - Copy last month by date or by weekday, with undo - Mark vacation, sick, personal and official leave - Different hours on different days? Change just that day - Monthly summary: how many of each shift and your total hours - Add your hourly wage for an estimated paycheck, with shift bonuses, overtime and currency (before tax) - Share your roster as an image, portrait for phones or landscape for computers, with your to-dos if you like. Showing your pay is up to you - Alarms and to-dos can ring only on workdays, days off or a certain shift, or "X minutes before work" - The widget shows today's and tomorrow's shift - Packed month or empty one, Sharky has something to say Sharky's briefing - Each morning Sharky grabs a pointer and briefs you on today's to-dos, what's overdue and what's done - Save a day's agenda as an image to share with family - Weekly report: to-dos done, rides taken and distance traveled, charted Holidays - Christian holidays like Easter and Christmas, one tap to get reminded And more - Home screen widget with Sharky; the large size lists today's to-dos. Start monitoring in one tap - Daily tarot, whack-a-mole, rock-paper-scissors, tic-tac-toe and gomoku, also as wake-up challenges - Time alarms, white noise, custom ringtones, headphones mode and quiet hours Your to-dos, roster and pay stay on your phone and are never uploaded.
Screenshots
Verdict
The clearest difference is ads: OnTime Clock at none against Grumpy Sharky's shown. Grumpy Sharky's advantage is update cadence (every 2 days vs every 2 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OnTime Clock ships an update every 2 months, Grumpy Sharky every 2 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.
| Parameter | OnTime Clock | Grumpy Sharky |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 136 MB |
| Age rating | 4+ | 4+ |
| Developer | 文巧 刘 | Longhong Chiang |
In-app purchases
OnTime Clock
No in-app purchases
Grumpy Sharky
No in-app purchases









